<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>
        <el-card>
            <el-row>
                <el-col>
                    <el-button type="primary" @click="showCateDialog">添加分类</el-button>
                </el-col>
            </el-row>
            <!-- 表格 -->
            <tree-table class="tree-table" :data="cateList" :columns="columns" :selection-type='false'
                :expand-type="false" show-index index-text="#" border :show-row-hover="false">
                <template slot="isok" slot-scope="scope">
                    <i class="el-icon-success" v-if="scope.row.cat_deleted === false" style="color:lightgreen"></i>
                    <i class="el-icon-error" v-else style="color:red"></i>
                </template>
                <template slot="order" slot-scope="scope">
                    <el-tag size="mini" v-if="scope.row.cat_level === 0">一级</el-tag>
                    <el-tag type="success" size="mini" v-else-if="scope.row.cat_level === 1">二级</el-tag>
                    <el-tag type="warning" size="mini" v-else>三级</el-tag>
                </template>
                <template slot="opt" slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditCateDialog(scope.row.cat_id)">编辑</el-button>
                    <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeCate(scope.row.cat_id)">删除</el-button>
                </template>
            </tree-table>
            <!-- 分页区 -->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                :current-page="this.querInfo.pagenum" :page-sizes="[1, 3, 6, 10]" :page-size="5"
                layout="total, sizes, prev, pager, next, jumper" :total="total">
            </el-pagination>
        </el-card>
        <el-dialog title="添加分类" :visible.sync="addCateDialogVisible" width="30%" @close="addCateDialogClosed">
            <el-form :model="addCateForm" :rules="addCateFormRules" ref="addCateFormRef" label-width="100px">
                <el-form-item label="分类名称" prop="cat_name">
                    <el-input v-model="addCateForm.cat_name"></el-input>
                </el-form-item>
                <el-form-item label="父级分类">
                    <el-cascader :options="parentCateList" :props="parentCateProps" v-model="valueKeys"
                        @change="handleChange" clearable>
                    </el-cascader>

                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addCateDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addCate">确 定</el-button>
            </span>
        </el-dialog>
        <el-dialog title="修改分类" :visible.sync="editCateDialogVisible" width="30%">
            <el-form :model="editCateForm" :rules="editCateFormRules" ref="editCateFormRef" label-width="100px" >
                <el-form-item label="分类名称" prop="cat_name">
                    <el-input v-model="editCateForm.cat_name"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editCateDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editCate">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
import axios from 'axios'
export default {
    name: 'Cate',
    data() {
        return {
            querInfo: {
                type: 3,
                pagenum: 1,
                pagesize: 5
            },
            cateList: [],
            total: 0,
            columns: [
                {
                    label: '分类名称',
                    prop: 'cat_name',

                },
                {
                    label: '是否有效',
                    type: 'template',
                    template: 'isok'
                },
                {
                    label: '排序',
                    type: 'template',
                    template: 'order'
                },
                {
                    label: '操作',
                    type: 'template',
                    template: 'opt'
                }

            ],
            addCateDialogVisible: false,
            addCateForm: {
                cat_name: '',
                cat_pid: '0',
                cat_level: '0'
            },
            addCateFormRules: {
                cat_name: [
                    { required: true, message: '请输入分类名称', trigger: 'blur' }
                ]
            },
            parentCateList: [],
            parentCateProps: {
                expandTrigger: 'hover',
                checkStrictly: true,
                label: 'cat_name',
                value: 'cat_id',
                children: 'children'
            },
            valueKeys: [],
            editCateDialogVisible: false,
            editCateForm:{},
            editCateFormRules:{
                cat_name:[
                    { required: true, message: '请输入分类名称', trigger: 'blur' }
                ]
            }
        }
    },
    created() {
        this.getCateList()
    },
    methods: {
        async getCateList() {
            const { data: res } = await axios.get('categories', { params: this.querInfo })
            if (res.meta.status !== 200) {
                return this.$message.error('获取商品分类失败')
            }
            console.log(res.data);
            this.cateList = res.data.result
            this.total = res.data.total
        },
        handleSizeChange(newpage) {
            this.querInfo.pagenum = newpage
            this.getCateList()
        },
        handleCurrentChange(newsize) {
            this.querInfo.pagesize = newsize
            this.getCateList()
        },
        showCateDialog() {
            this.getParentCateList()
            this.addCateDialogVisible = true
        },
        async getParentCateList() {
            const { data: res } = await axios.get('categories', { params: { type: 2 } })
            if (res.meta.status !== 200) {
                return this.$message.error('获取父级分类数据失败')
            }
            this.parentCateList = res.data
        },
        handleChange() {
            console.log(this.valueKeys)
            if (this.valueKeys.length > 0) {
                this.addCateForm.cat_pid = this.valueKeys[
                    this.valueKeys.length - 1
                ]
                this.addCateForm.cat_level = this.valueKeys.length
                return
            } else {
                this.addCateForm.cat_pid = 0
                this.addCateForm.cat_level = 0
            }

        },
        addCate() {
            this.$refs.addCateFormRef.validate(async valid => {
                if (!valid) return
                const { data: res } = await axios.post(
                    'categories',
                    this.addCateForm
                )

                if (res.meta.status !== 201) {
                    return this.$message.error('添加分类失败！')
                }

                this.$message.success('添加分类成功！')
                this.getCateList()
                this.addCateDialogVisible = false
            })
        },
        addCateDialogClosed() {
            this.$refs.addCateFormRef.resetFields()
            this.valueKeys = []
            this.addCateForm.cat_level = 0
            this.addCateForm.cat_pid = 0
        },
        async showEditCateDialog(id) {
             const {data:res} = await axios.get('categories/' + id)
            //  console.log(res.data);
            if(res.meta.status!==200){
                return this.$message.error('获取分类信息失败')
            }
             this.editCateForm = res.data
             this.getCateList()
            this.editCateDialogVisible = true
        },
        editCate(){
            this.$refs.editCateFormRef.validate(async valid =>{
                if(!valid)return
                const {data:res} = await axios.put('categories/' + this.editCateForm.cat_id,{cat_name:this.editCateForm.cat_name})
                if(res.meta.status!==200){
                    return this.$message.error('修改分类失败')
                }
                this.$message.success('修改分类成功')
                this.editCateDialogVisible = false
                this.getCateList()
            })
        },
        async removeCate(id){
          const result = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        if(result !== 'confirm'){
            return this.$message.info('已取消删除')
        }
        const {data:res} = await axios.delete('categories/' + id)
        if(res.meta.status!==200){
            return this.$message.error('删除分类失败')
        }
        this.$message.success('删除分类成功')
        this.editCateDialogVisible = false
        this.getCateList()
        }
    },
}
</script>

<style lang="less" scoped>
.tree-table {
    margin-top: 15px;
}

.el-cascader {
    width: 100%;
}
</style>